Machine for mending stereotype-plates



(No Model.) l

J. NORTH.

MACHINE POR MENDINGSTEREOTYPE PLATES. No. 333,325. Patented Deo. 29, 1885.

NA PETERS. PholwLthugmphor, Washinglan. DI;

WITNESSES (Z. W wgM/ UNITED STATES JAOOR NORTH, V'or LINeOLN, NRBRAsKA.-

MACHINE FOR MENDING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent N0. 333,325, dated December 29. 1885.

Application tiled May 12,1885. Serial No. 165,209. (No model.)

.To @ZZ whom t may concern,.-

Beit known that I, JACOB N ORTH, of Lincoln, county of Lancaster, Nebraska, have invented a new and Improved Machine for Mending Stereotype and Electrotype Plates, of which the following is a full, clear, and eX- act description.

The object of my invention is to provide a new and improved machine for mending stereotype and electrotype plates-thatis, for removing the characters that are wrong and replacing them by others.

The invention consists in the construction and arrangement of parts, as will be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings7 forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a longitudinal sectional elevation of my improved machine for mending stereotype or electrotype plates. Fig. 2 is a plan view of the same, parts being in section. Fig. 3 is a plan view of a plate partly mended. Fig. 4 is a longitudinal sectional elevation of the same on the line a: x, Fig. 3. Fig. 5 is a cross-sectional elevation of the same on the line y y, Fig. 3.

The elbow-standard A is formed on a base, B, having an aperture, C, and a recess, D, in its top, in which recess a revolving die, E, is held by a screw or pivot, E', the top of which is flush with the top of the base. The die E has a series of apertures, F, of different shapes and sizes.

A plunger, G, is arranged to slide in the standard A, and has its upper end connected by a link, H, with a hand-lever, J, pivoted on the standard A, thus forming a toggle-lever. A punch, K, is secured on the lower end ofthe plunger G.

In grooves L in the top of the base B two sliding bars, M, are placed, which have longitudinal slots, through which screws N project from the base, on which screws nuts O are screwed. Clamping-jaws P are secured on the inner adjacent ends of the bars M.

The operation is as follows: The die E is turned to bring an aperture, F, of the same Shape and size as the aperture to be made in their faces are fiush with the faces of the char- 6o acters on the plate Q. The projecting parts of the type on the back of the plate are then cut off ush with the back of the plate. The metal of the plate is then bushed at each side of the inserted type to hold the said type in place, and the back of the plate planed off and finished.

The holes, slots, 8vo., can be so made that the type ts snugly in the same.

The plate while being punched is held by the jaws I).

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A machine for mending stereotype and electrotype plates, consisting in the base B, standard A, having the plunger G, the revoluble die E on the base below the plunger, and having a series of type-shaped apertures, F, and the clamps on opposite sides of the die E, substantially as set forth.

2. In a machine for mending stereotype and electrotype plates, the combination, with the base having a circular recess, and the circular die E therein flush with the surface of'the base, and provided with a series of type-V shaped apertures, of male dies corresponding in shape to the said apertures, substantially as set forth.

3. In a machine for mending stereotype and electrotype plates, the combination, with base B, having the grooves L and central recess, D, between the same, of the die E in the said central recess, and the slotted bars M, adapted to slide in the slots L, and provided with clamping-jaws P and set-screws N O, as set forth.

JACOB NORTH.

Witnesses:

J AMns G. SAYER, CHARLES E. CoMsTooK. 

